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Gear shifting device

A technology for shifting devices and shifting parts, which is applied to wheel transmissions, transportation and packaging, bicycle accessories, etc. It can solve the problems that the overrunning clutch and shifting cannot be realized at the same time, the difficulty is large, the structure is complicated, etc., and the structure is compact. , easy operation and reliable gear shifting effect

Active Publication Date: 2016-10-12
ZHANGJIAGANG CHUANJUN VEHICLE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The internal transmission is mainly composed of a planetary gear transmission mechanism and a shifting device. The shifting device in the prior art generally has the following technical defects: 1. The structure is too complicated, and it is difficult for workers to maintain it. 2. The overrunning clutch and shifting device cannot be realized at the same time. block two functions

Method used

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  • Gear shifting device
  • Gear shifting device
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Examples

Experimental program
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Effect test

Embodiment 2

[0023] The rest of the structure of the shifting device in this embodiment is the same as that of Embodiment 1, the difference lies in the structure of the shifting member 31. In this embodiment, the double-sided pawl is arranged at one end of the main body 310, and the extension The part 315 is set at the other end of the main body part 310, and the positioning hole 313 is set between the double-sided ratchet and the extension part 315. , the outer ratchet 312 of the shifting member meshes with the second ratchet 21 in the second transmission member 2. When shifting gears, the manual shifting part 5 is moved axially so that the manual shifting part 5 and the shifting part The ball body 3161 of the elastic device is engaged, and the shift sleeve 5 pushes up the shift member 31 and retracts it toward the inner circle, so that the outer pawl 312 is disengaged from the second ratchet wheel 21 of the second transmission member 2, and the inner pawl 311 It meshes with the first rat...

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Abstract

The invention relates to a gear shifting device, which comprises a first transmission element, a second transmission element and a gear shifting mechanism, wherein an accommodating cavity is formed between the second transmission element and the first transmission element; the second transmission element is provided with an inner wall positioned in the accommodating cavity; the first transmission element is provided with an outer wall positioned in the accommodating cavity; a first ratchet wheel is arranged in the outer wall position of the first transmission element; a second ratchet wheel is arranged in the inner wall position of the second transmission element; the gear shifting mechanism comprises a gear shifting element frame and at least one gear shifting element arranged on the gear shifting element frame; the gear shifting element comprises a main body part and an extending part; an elastic device is arranged in the extending part or the gear shifting element frame; one end of the main body part is provided with a double-side pallet; the other end or the middle section of the main body part is provided with a positioning hole; a manual gear shifting part matched with the elastic device is arranged on the axial line of the gear shifting element frame. The gear shifting can be realized through axially moving the manual gear shifting part; meanwhile, the function of an overrun clutch can also be realized through the transmission of the ratchet wheels and the pallet.

Description

【Technical field】 [0001] The invention relates to a shifting device. 【Background technique】 [0002] Bicycle transmissions are divided into two types: internal transmissions and external transmissions. The external transmission uses an open chain mechanism as the transmission system. By switching the shifter installed in front of the bicycle, the chain is changed to different flywheels to achieve different chain transmission ratios. Since the external derailleur is exposed, it is relatively easy to rust and is easily disturbed by external forces, so regular maintenance is often required. The internal derailleur mainly uses a planetary gear mechanism as the main transmission body, which is sealed inside the hub and passed through multiple layers of special sealing materials. Protection, so rainwater, dust, grease, etc. cannot enter, so there is no need for regular maintenance, and the advantage of maintenance-free is realized. The internal transmission is mainly composed of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M11/00B62M25/00
CPCB62M11/00B62M25/00
Inventor 黄英可
Owner ZHANGJIAGANG CHUANJUN VEHICLE IND CO LTD
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